1 entry 1 source
Heptavalent
Open directlyWebster's 1828 Dictionary · 1828
Part of speech: adjective (a.)
Having seven units of attractive force or affinity; -- said of heptad elements or radicals.
1 entry 1 source
Part of speech: adjective (a.)
Having seven units of attractive force or affinity; -- said of heptad elements or radicals.